There is still no failure, but there are some disadvantages: there are more teachers than students; The tutor platform has not improved the efficiency of students and parents; Tutoring at home has no dignity, and the long journey delays the teacher's time. Careless collocation has very limited value to both teachers and learners, and has not changed their collocation habits. Unlike tourism, the education industry has a natural circle of classmates. Many teachers' word of mouth comes from students, and freshmen come from the introduction of existing students and parents. A teacher training course can only recruit a few students. In other words, teaching, learning and platform can not achieve a positive cycle. The better the information matching, the less valuable the platform, and the better the information matching.